Radiosignaling



N07. 25, 1930. A. w. SLAGHT 1,782,831

' RADIOSIGNALING Filed May a, 1928 III/5W0}? Patented Nov. 25, 1930 UNITED STATES PATENTOF ACE w. sLaeH'r; or NEAR sari JOSE, cALIroRnIA namosrennrme 1 Application filed May s, 1928.; Serial. nolflz'iaozr.

Thisinvention relates particularly toradio receiving systems. 7

It is one object ofthe invention to provide means for securing increased volume in a radio receiving set.

It is another object of the invention toprovide a means of the character indicated that will obviate the necessity of providing an aerial for the receiving set.

vide a means of the character indicated that will greatly increase the selectivity of the set, and greatly increase its efficiency in tuning indistant sending stations.

It is still another object of the invention'to provide a container in which all the necessary additional elements are arranged and positioned ready for connecting as desired to a receiving 'sct. I

In addition to the foregoing this invention comprehends improvements in the details of construction and arrangement of'parts to be hereinafter set forth and particularly pointed out in the appended claims. In the drawing:

Figure 1 is a schematic diagram showing one form of my invention as applied to a four tube receiving set and a B eliminator.

Figure 2 is a diagram showing a simple form of my invention independentlyof the receiving set. f V

Figure 3 is a perspective view of a receptacle with the several parts of the invention mounted therein. 1

Referring now more particularly to the drawing, I show at 1 a schematic diagram of a four tube receiving set with the aerial and ground terminals indicated at 2 and 3 respectively, the cable connector being shown in part at 4:, the wiresleading to the power tube, the detector tubeof the set being indicated at 5 and 6 respectively andthe ninety volt B battery terminal of the set 5 being indicated at 7.

pair of impedence coils as 8 and 9, one end of onecoil as 8 being adapted to connect to i the aerialbinding post 2 "of the set and the.

other end being turned back through the center of the coil-as at 10 and connected to It is also an object of the invention to pro- In effecting my inventionI firstprovide a the corresponding end 11 of the coil 9." The other end of the coil9 is adapted to connect to the ground binding post 3 of thefset. as shown. A short ground12 is insertedin the Wire between the ends10 and 11 as shown. 1 Other suitable devices may. be inserted in this device as desired such as afcondenser in the ground connectionas shown at 13 in FigureQ. 1

I have found that by means of a hook-up of this kind the necessity ofproviding either an outside or inside aerial is entirely elimi nated, and that not onlyis the selectivity of the set greatly increased, but the volume of sound secured isgreatly augmented and the range. of the set insofar as station distance isconcerned is greatly increased. I have found that Number twenty wire wound on a one and one-half by four and one-half inch tube secures the desired results, and that this device functions in the manner'set forth on any tube set to which it may be connected.

The results obtained by the device as described are greatly enhanced when the set is used in conjunction with a B, battery eliminator by making the following insertions in the hook-up. In the wire 16 connecting the power tube terminal 14; of the B eliminator 15 with the power tube terminal 5 of the set I insert an impedance coil17, the end of the coil connecting with the eliminator portion of the wire 16 passing throughthe coil as shown: In the wire 18 connectingthe ninety volt terminal-7 on the set withtheninety volt terminal 19 on the eliminator I insertan impedancecoil20, the end of the coil connecting with the eliminator portion of the 'wire 18 passing through the coil as shown. In the wire 21 connecting the detector tube terminal 22 on the eliminator with. the detector tube terminal6 of the set I insert a suitable filter as 23. These insertions still further increase the range of usefulness of the set and may be connected to thesetfin various ways, and to various setsaccording to their schematic diagrams. i

I provide these several devices ready for use in the following manner. First I provide a suitable insulating jar ofglass as24 having a plurality of compartments as 25, 26, 27,28, 29

and 30 formed therein. In each of these compartments I imbed one of the devices in white paraffin wax with their ends exposed for making the desired connections.

As many changes could be made in the foregoing described construction and arrangement and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. It is also to be understood that the language used in the following claim is intended to cover all of the generic and specific features of the invention herein described.

I claim:

In a radio receiver, a radiant energy collector unit comprising a pair of permanently fixed coils having a predetermined fixed spaced relation, one of said coils having one of its ends connected to the ground terminal of the receiver and its opposite end connected to a conductor extending axially through said coil and connected to ground, the other of said coils having one of its ends connected to the aerial terminal of the receiver and its opposite end connected toa conductor extending axially through the last named coil and connected to the said ground.

ACE W. SLAGHT. 

